Design method to prevent the pattern formation phenomena in contact rotating systems

防止接触旋转系统中图案形成现象的设计方法

基本信息

批准号：
13650255
负责人：
KONDOU Takahiro
金额：
$ 2.24万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650255/
关键词：
Pattern Formation Phenomena Contact Rotating System Time Delay System Energy Factor Model Analysis Unstable Vobration Stability Analysis Optimum Design

项目摘要

In many contact rotating systems used in the field of mechanical engineering, a large vibration often occurs in operation along with a spontaneous growth of deformation of system components, and then a periodic deformation pattern is formed on the peripheral surfaces. The stability of such phenomena is usually analyzed by obtaining the characteristic roots of a linear time delay system. However, the analytical method is not available for a prevention measure of many-degree-of-freedom systems, since a large amount of complicated numerical computation is required. In our previous study, the numerical difficulty was overcome by applying the concept of modal analysis and by separating a characteristic equation of many-degree-of-freedom system into those of one-degree-of-freedom systems for each mode. In addition, the simplified method of stability analysis, which did not need the computation of characteristic roots, was developed by considering the energy balance. The fol- lowing subjects … More were mainly studied to improve the simplified method.1. The simplified method was applied to two practical examples in which the longitudinal bending deformation of shaft was considered. One is a model of three-roll-system which is the most basic model of a paper making machine constructed from many rolls, and the other is a model with Controlled Dumper Roll which is very effective against the pattern formation phenomena. Moreover, by combining the simplified method and the concept of optimum design, an effective method was developed to determine rationally the system parameters which prevent the occurrence of pattern formation phenomena.2. It became clear from our studies that the effect of nonlinearity contained in the system unavoidably had to be considered to get the overall property of the pattern formation phenomena and to devise the countermeasure. As a fundamental study, the nonlinear vibration phenomena generated in a viscoelastic system and a grinding system were investigated. Less

在机械工程领域使用的许多接触旋转系统中，这种现象的稳定性是外围表面。数值差异是模态分析的概念，并通过将DOM系统的特征方程式分离为每种模式的自由度系统的概念。通过同意的能量平衡来开发，主要研究了简化的方法。通过结合简化的方法和最佳设计的概念，具有对模式形成现象非常有效的模型，这是一种有效的方法，以合理地确定系统参数，以防止发生模式形成现象。 2。从我们的研究中可以清楚地看出，系统中包含的非线性的影响不可避免地要限制在模式形成现象的整体特性中，并设计了他作为基本研究。磨削系统的投资较少